On June 26, 2012, the Siraya National Scenic Area Headquarters announced the initial expansion, incorporating six additional villages in Zhongpu Township, resulting in a total area of 95,470 hectares. On November 3, 2022, the second public announcement was made to expand the jurisdiction by including the Jibeishua (Kabuasua) Tribe in Dongshan District (parts of Keli Village and Donghe Village), and parts of Longci District (parts Niupu Village and Longchuan Village). The Headquarters’ current administrative jurisdiction encompasses the entire Zuozhen District, Nanxi District, Danei District, Shanshang District, and Yujing District of Tainan City; the entire Dapu Township of Chiayi County; and parts of Baihe District, Xinhua District, Xinshi District, Shanhua District, Guantian District, Liujia District, Liuying District, Dongshan District, Nanhua District, and Longci District of Tainan City; and parts of Shilong Village in Zhongpu Township of Chiayi County. In total, it includes 17 districts and townships, covering an area of 96,682 ha. The jurisdictional area is also organized into three major travel routes for tourism development and planning.
- Colorful Artistic Land: Starting at National Highway 3 and extending along Provincial Highway 84, this travel route winds through Danei, Xinhua, and Zuozhen, spanning diverse regions such as Danei, Shanshang, Xinhua, Zuozhen, and Longci. It serves as a cultural and art corridor, enriched with history and humanities.
- Romantic Hot Spring: Spanning from Guanziling to Wasanto, this picturesque travel route commences at Taiwan County Road 172, just below the Baihe Interchange of National Highway 3, and traverses through Baihe, Dongshan, Liujia, and Guantian. Renowned as a tourist destination replete with culinary delights, entertainment, and intellectual pursuits, it beckons you to explore the scenic landscapes and cultural richness with your family.
- Joyful Countryside: This travel route begins at Provincial Highway 3 in Dapu Township of Chiayi County, covering Dapu Township in Chiayi County, as well as Nanxi, Yujing, and Nanhua in Tainan City. It is a scenic corridor brimming with the natural charm and cultural beauty of the region.